6_44 - 6.44 A tubular steel shaft is being designed to...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
6.44 A tubular steel shaft is being designed to transmit 225 kW at 1,700 rpm. The maximum shear stress in the shaft must not exceed 30 MPa. If the outside diameter of the shaft is D = 75 mm, determine the minimum wall thickness for the shaft. Solution The torque in the tubular steel shaft is: () 1,000 N-m/s 225 kW 1 kW 1,263.877 N-m 1,700 rev 2 rad 1 min min 1 rev 60 s P T π ω ⎛⎞ ⎜⎟ ⎝⎠ == = The maximum shear stress in the shaft will be determined from the elastic torsion formula: Tc J τ = where 44 32 J Dd ⎡⎤ =− ⎣⎦ Rearrange this equation, grouping the diameter terms on the left-hand side of the equation:
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online